One of the features in Exchange 2007 is Outlook Web Access (OWA). This feuture was also available in the earlier versions of Exchange, but this OWA has changed in a copple of things. Its almost a complete web-based Outlook client.
Default all of the users have access to all the (new)features.
From the EMC (Exchange Management Console) go to Server Configuration, Client Access, Outlook Web Acces and open the Properties. After this go to the Segmentation tab.
Here you can enable or disable some features. Let’s customize our OWA website, and find the differents 😉